DE19516815A1 - Ceramicized light alloy pistons for internal combustion engines - Google Patents
Ceramicized light alloy pistons for internal combustion enginesInfo
- Publication number
- DE19516815A1 DE19516815A1 DE19516815A DE19516815A DE19516815A1 DE 19516815 A1 DE19516815 A1 DE 19516815A1 DE 19516815 A DE19516815 A DE 19516815A DE 19516815 A DE19516815 A DE 19516815A DE 19516815 A1 DE19516815 A1 DE 19516815A1
- Authority
- DE
- Germany
- Prior art keywords
- conversion layer
- piston
- light metal
- ceramic conversion
- internal combustion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 9
- 229910001234 light alloy Inorganic materials 0.000 title description 2
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052574 oxide ceramic Inorganic materials 0.000 claims abstract description 14
- 239000011224 oxide ceramic Substances 0.000 claims abstract description 14
- 239000000919 ceramic Substances 0.000 description 13
- 239000000463 material Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000005524 ceramic coating Methods 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910018576 CuAl2O4 Inorganic materials 0.000 description 1
- 229910026161 MgAl2O4 Inorganic materials 0.000 description 1
- 229910003303 NiAl2O4 Inorganic materials 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/10—Pistons having surface coverings
- F02F3/12—Pistons having surface coverings on piston heads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/10—Pistons having surface coverings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases
- F02F7/0085—Materials for constructing engines or their parts
- F02F7/0087—Ceramic materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Die Erfindung betrifft einen neuartigen hochschwingungs- und hochtempe raturbelastbaren Leichtmetallkolben für Verbrennungsmotoren.The invention relates to a novel high vibration and high temperature light-weight pistons for internal combustion engines that can withstand high loads.
Es ist bekannt, örtlich hochbelastete Oberflächen auf Leichtmetallkolben - insbesondere seinen Boden - elektrolytisch zu oxidieren (Motortechnische Zeitschrift, 1975, S. 241; DE-PS 26 26 131). Diese so aufgebrachte Eloxal- bzw. Harteloxalschicht neigt aufgrund ihres amorphen Charakters bei hoher Beanspruchung zur Rißbildung. Der Riß kann sich bis in das Grundmaterial fortsetzen. Das führt zum Ausfall des Kolbens und damit des gesamten Motors.It is known to have locally highly stressed surfaces on light metal pistons - in particular to oxidize its soil - electrolytically (engine technology Zeitschrift, 1975, p. 241; DE-PS 26 26 131). This anodized or hard anodized layer tends to be high due to its amorphous character Stress for crack formation. The crack can extend into the base material continue. This leads to the failure of the piston and thus of the whole Motors.
In der EP-A-412 660 wird ein wärmeisolierender Kolben beschrieben, in dessen Kolbenbodenbereich u. a. ein wärmeisolierendes Element aus kera mischem Material aufgebracht ist. Das hat den Nachteil, daß die Keramik nur ungenügende Haftung auf der Metalloberfläche des Kolbens hat und sich bei hoher Belastung lockert und auch so zum Ausfall des Kolbens führt.EP-A-412 660 describes a heat-insulating piston, in whose piston crown area u. a. a heat-insulating element made of kera mixed material is applied. This has the disadvantage that the ceramic has insufficient adhesion to the metal surface of the piston and loosens under high loads and also causes the piston to fail leads.
Die DE-PS 36 11 165 beschreibt einen integral gegossenen Kolben für eine Brennkraftmaschine, in dem eine keramische Platte in einer Kappe auf Eisenbasis verankert ist. Die Produktion eines derartigen Kolbens ist zeit- und kostenaufwendig. Auch tritt hier eine Lockerung des Keramikbauteiles aufgrund der hohen thermischen Belastungen sowie Schwingungsbelastun gen auf.DE-PS 36 11 165 describes an integrally cast piston for one Internal combustion engine in which a ceramic plate in a cap Iron base is anchored. The production of such a piston is timely and expensive. There is also a loosening of the ceramic component here due to the high thermal loads and vibration loads towards.
In der DE-OS 33 30 554 wird ein Kolben für eine Brennkraftmaschine beschrieben, dessen Brennraummulde mit einer durch thermisches Spritzen oder Einbrennen aufgebrachten Keramikbeschichtung versehen ist, in die eine Keramikeinlage eingegossen ist. Auch hier kann sich der Verbund Keramikeinlage/Keramik bei hoher Schwingungs- und Temperaturbelastung lockern und die schon beschriebenen Nachteile hervorrufen.In DE-OS 33 30 554 a piston for an internal combustion engine described, the combustion chamber trough with a thermal spray or baking applied ceramic coating is provided in the a ceramic insert is cast in. Here too, the association can Ceramic inlay / ceramic with high vibration and temperature stress loosen and cause the disadvantages already described.
Keramiken wurden auch auf metallische Kolben durch Aufsprühverfahren gemäß US-A-2,833,264 und DE-OS 34 04 284 oder Sinterung einer Keramik auf dem Kolbenmetall gemäß US-A-2,657,961 aufgebracht. Diese Methode hat aber den entscheidenden Nachteil, daß dicke Überzüge (80 bis 150 µm) aufgrund hoher Wärmegradienten und unterschiedlicher Wärmedehnung in Verbindung mit hohen Stoßbelastungen Risse bilden und der Verbund Keramiküberzug/Kolben dadurch an der Grenzfläche destabilisiert wird.Ceramics were also sprayed on metallic pistons according to US-A-2,833,264 and DE-OS 34 04 284 or sintering a ceramic applied to the piston metal according to US-A-2,657,961. This method has the decisive disadvantage that thick coatings (80 to 150 µm) due to high thermal gradients and different thermal expansion in Connection with high impact loads form cracks and the bond Ceramic coating / piston is thereby destabilized at the interface.
Der Erfindung liegt nun die Aufgabe zugrunde, einen Leichtmetallkolben, insbesondere aus Aluminium oder Aluminiumlegierungen, bereitzustellen, der eine hochschwingungs- und hochtemperaturbelastbare wärmeisolie rende Keramikschicht aufweist und somit eine hohe Verbundstabilität Keramik/Kolbenmaterial gewährleistet.The invention is based on the object, a light metal piston, in particular made of aluminum or aluminum alloys, which is a high vibration and high temperature resistant thermal insulation Ceramic layer and thus a high bond stability Ceramics / piston material guaranteed.
Die Aufgabe wird erfindungsgemäß durch einen Leichtmetallkolben, gelöst, dessen Oberfläche ganz oder teilweise mit einer Oxidkeramik-Konversions schicht überzogen ist.According to the invention, the object is achieved by a light metal piston, all or part of its surface with an oxide ceramic conversion layer is covered.
Der Kolben kann aus Aluminium oder Aluminiumlegierungen (vgl. Alumi nium-Taschenbuch, Aluminium-Verlag Düsseldorf (1983), S. 1044) herge stellt sein.The piston can be made of aluminum or aluminum alloys (cf.Alumi nium-Taschenbuch, Aluminum-Verlag Düsseldorf (1983), p. 1044) poses.
Unter einer Oxidkeramik-Konversionsschicht wird hier und im folgenden eine Oxidkeramikschicht verstanden, die durch eine anodisch plasmasche mische Reaktion in einem Elektrolyten aus einer Leichtmetalloberfläche, vorzugsweise aus Aluminium oder einer Aluminiumlegierung, hergestellt wurde. Solche Schichten und die Verfahren zu ihrer Herstellung sind bei spielsweise aus der EP-B-280 886, EP-B-545 230 und DE-OS 41 04 847 bekannt. Bei dieser Reaktion wird ein Teil des Leichtmetalles zu einer Kera mik oxidiert. Bei einem Aluminiumkolben bildet sich eine kristalline Al₂O₃- Keramik bis zu einer Stärke von 120 µm. Röntgenographisch lassen sich z. B. bei Verwendung des Kolbenmaterials AlSi12CuMgNi auch Doppeloxide wie NiAl₂O₄ und/oder MgAl₂O₄ und/oder CuAl₂O₄ nachweisen. Die Elemen te für die Doppeloxide sind die Legierungsbestandteile des Kolbenmaterials. Diese so hergestellte Konversionsschicht aus Keramik auf dem Kolben hat die Eigenschaft, daß sie mit dem Kolben sehr fest verbunden ist und hohe Belastungen wie Wärmeausdehnung bis 400°C und Schwingungsbelastun gen im High Cycle Fatigue bis 50 × 106 Lastwechsel pro Minute aushält. Below and below is an oxide ceramic conversion layer an oxide ceramic layer understood by an anodic plasma mesh mix reaction in an electrolyte from a light metal surface, preferably made of aluminum or an aluminum alloy has been. Such layers and the processes for their production are included for example from EP-B-280 886, EP-B-545 230 and DE-OS 41 04 847 known. In this reaction, part of the light metal becomes a Kera mic oxidized. A crystalline Al₂O₃- forms in an aluminum piston Ceramic up to a thickness of 120 µm. Can be x-rayed e.g. B. when using the piston material AlSi12CuMgNi also double oxides as NiAl₂O₄ and / or MgAl₂O₄ and / or CuAl₂O₄ detect. The elemen Te for the double oxides are the alloy components of the piston material. This ceramic conversion layer thus produced has on the piston the property that it is very firmly connected to the piston and high Loads such as thermal expansion up to 400 ° C and vibration loads in high cycle fatigue up to 50 × 106 load changes per minute.
Gemäß einer weiteren erfindungsgemäßen Ausführungsform ist der Kolben boden des Leichtmetallkolbens ganz oder teilweise mit einer Oxidkeramik- Konversionsschicht überzogen.According to a further embodiment according to the invention, the piston is base of the light metal piston completely or partially with an oxide ceramic Conversion layer coated.
Ebenso kann die Brennmulde und/oder der Feuersteg mit einer Oxidkera mik-Konversionsschicht überzogen sein.Likewise, the fire bowl and / or the top land with an oxide kera mic conversion layer to be coated.
In einer bevorzugten Ausführungsform der Erfindung beträgt die Schicht dicke der Oxidkeramik-Konversionsschicht 10 bis 150 µm, vorzugsweise 60 bis 80 µm.In a preferred embodiment of the invention, the layer is thickness of the oxide ceramic conversion layer 10 to 150 microns, preferably 60 up to 80 µm.
Gemäß einer besonders bevorzugten erfindungsgemäßen Ausführungsform sind in der Oxidkeramik-Konversionsschicht Verbrennungskatalysatoren eingelagert, die zur vollständigen Verbrennung des Kraftstoffes zu Kohlen dioxid und Wasser dienen.According to a particularly preferred embodiment according to the invention are combustion catalysts in the oxide ceramic conversion layer stored for the complete combustion of the fuel to coals serve dioxide and water.
Solche Katalysatoren sind beispielsweise Metalle wie Edelmetalle z. B. Platin, Palladium, Rhodium, Ruthenium oder oxidische Verbindungen aus Nicht edelmetallen wie Oxide des Kupfers, Chroms, Mangans, Eisens, Kobalts, Nickels und deren Kombinationen.Such catalysts are, for example, metals such as noble metals e.g. B. platinum, Palladium, rhodium, ruthenium or oxidic compounds from non precious metals such as oxides of copper, chromium, manganese, iron, cobalt, Nickels and their combinations.
Das folgende Beispiel dient zur Erläuterung der Erfindung:The following example serves to explain the invention:
Ein Leichtmetallkolben aus G-AlSiCuNi wird in eine elektrische Kontaktie rungsvorrichtung so eingespannt, daß nur der Kolbenboden mit dem Elek trolyten in Berührung kommt. Die anodische plasmachemische Reaktion des Kolbenbodens erfolgt bei Stromdichten von 5 A/dm² und einer End spannung von 220-230 V. Die Schichtdicke beträgt 60 µm und ist bei einer Beschichtungszeit von 45 min erreicht.A light alloy piston made of G-AlSiCuNi is placed in an electrical contact tion device so clamped that only the piston crown with the elec trolyte comes into contact. The anodic plasma chemical reaction the piston crown takes place at current densities of 5 A / dm² and one end voltage of 220-230 V. The layer thickness is 60 µm and is at one Coating time of 45 min reached.
Versuche im Motortest ergaben, daß bei sehr hohen Belastungen die Ver bundstabilität Keramikkonversionsschicht/Kolben erhalten bleibt und sich keine Risse gebildet haben.Tests in the engine test showed that the Ver Bundstabilities ceramic conversion layer / piston is preserved and itself have not formed any cracks.
Claims (7)
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19516815A DE19516815A1 (en) | 1995-05-08 | 1995-05-08 | Ceramicized light alloy pistons for internal combustion engines |
| DE19680303T DE19680303D2 (en) | 1995-05-08 | 1996-05-08 | Ceramicized light alloy pistons for internal combustion engines |
| AT96914053T ATE174662T1 (en) | 1995-05-08 | 1996-05-08 | CERAMIZED LIGHT METAL PISTON FOR COMBUSTION ENGINES |
| DE29680358U DE29680358U1 (en) | 1995-05-08 | 1996-05-08 | Ceramicized light alloy pistons for internal combustion engines |
| DE59601018T DE59601018D1 (en) | 1995-05-08 | 1996-05-08 | CERAMIZED LIGHT METAL PISTON FOR COMBUSTION ENGINES |
| ES96914053T ES2127637T3 (en) | 1995-05-08 | 1996-05-08 | LIGHT METAL PISTON WITH CERAMIC COATING FOR INTERNAL COMBUSTION ENGINES. |
| PCT/DE1996/000797 WO1996035868A1 (en) | 1995-05-08 | 1996-05-08 | Ceramic-coated light-metal piston for internal combustion engines |
| EP96914053A EP0839271B1 (en) | 1995-05-08 | 1996-05-08 | Ceramic-coated light-metal piston for internal combustion engines |
| AU57588/96A AU5758896A (en) | 1995-05-08 | 1996-05-08 | Ceramic-coated light-metal piston for internal combustion en gines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19516815A DE19516815A1 (en) | 1995-05-08 | 1995-05-08 | Ceramicized light alloy pistons for internal combustion engines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE19516815A1 true DE19516815A1 (en) | 1996-11-14 |
Family
ID=7761344
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19516815A Withdrawn DE19516815A1 (en) | 1995-05-08 | 1995-05-08 | Ceramicized light alloy pistons for internal combustion engines |
| DE59601018T Expired - Lifetime DE59601018D1 (en) | 1995-05-08 | 1996-05-08 | CERAMIZED LIGHT METAL PISTON FOR COMBUSTION ENGINES |
| DE19680303T Expired - Lifetime DE19680303D2 (en) | 1995-05-08 | 1996-05-08 | Ceramicized light alloy pistons for internal combustion engines |
| DE29680358U Expired - Lifetime DE29680358U1 (en) | 1995-05-08 | 1996-05-08 | Ceramicized light alloy pistons for internal combustion engines |
Family Applications After (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE59601018T Expired - Lifetime DE59601018D1 (en) | 1995-05-08 | 1996-05-08 | CERAMIZED LIGHT METAL PISTON FOR COMBUSTION ENGINES |
| DE19680303T Expired - Lifetime DE19680303D2 (en) | 1995-05-08 | 1996-05-08 | Ceramicized light alloy pistons for internal combustion engines |
| DE29680358U Expired - Lifetime DE29680358U1 (en) | 1995-05-08 | 1996-05-08 | Ceramicized light alloy pistons for internal combustion engines |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0839271B1 (en) |
| AT (1) | ATE174662T1 (en) |
| AU (1) | AU5758896A (en) |
| DE (4) | DE19516815A1 (en) |
| ES (1) | ES2127637T3 (en) |
| WO (1) | WO1996035868A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009012945A1 (en) * | 2009-03-12 | 2010-09-16 | Mtu Aero Engines Gmbh | Method for producing an abrasive coating and component for a turbomachine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10320979B4 (en) * | 2003-05-09 | 2006-01-05 | Federal-Mogul Nürnberg GmbH | Piston for an internal combustion engine and method for coating a piston for an internal combustion engine |
| JP4438609B2 (en) † | 2004-11-16 | 2010-03-24 | アイシン精機株式会社 | piston |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2626131A1 (en) * | 1976-06-11 | 1977-12-22 | Mahle Gmbh | HARD ANODIZED LIGHT ALLOY PISTON |
| DE3928480A1 (en) * | 1988-10-03 | 1990-04-12 | Barkas Werke Veb | IC engine with catalyst-coated combustion chamber - using silica, alumina and magnesia based ceramic mixt. as catalyst |
| DE4242099A1 (en) * | 1992-12-14 | 1994-06-16 | Abb Patent Gmbh | Appts., esp. gas turbine appts. - having coating on its operating parts in contact with fuel gas or waste gas to reduce pollutant emissions |
| EP0545230B1 (en) * | 1991-11-27 | 1995-06-28 | Electro Chemical Engineering GmbH | Process for preparing modified oxide ceramic coatings on barrier-layer metals and products obtained |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4037393A1 (en) * | 1990-11-22 | 1992-07-30 | Jenoptik Jena Gmbh | Electrolyte for anodising light metal or alloy to oxide ceramic coating - contg. ammonium di:hydrogen phosphate and ammonium acetate in aq. soln. |
| DE4303135C2 (en) * | 1993-02-04 | 1997-06-05 | Mtu Muenchen Gmbh | Thermal insulation layer made of ceramic on metal components and process for their production |
-
1995
- 1995-05-08 DE DE19516815A patent/DE19516815A1/en not_active Withdrawn
-
1996
- 1996-05-08 WO PCT/DE1996/000797 patent/WO1996035868A1/en not_active Ceased
- 1996-05-08 AU AU57588/96A patent/AU5758896A/en not_active Abandoned
- 1996-05-08 DE DE59601018T patent/DE59601018D1/en not_active Expired - Lifetime
- 1996-05-08 ES ES96914053T patent/ES2127637T3/en not_active Expired - Lifetime
- 1996-05-08 DE DE19680303T patent/DE19680303D2/en not_active Expired - Lifetime
- 1996-05-08 DE DE29680358U patent/DE29680358U1/en not_active Expired - Lifetime
- 1996-05-08 EP EP96914053A patent/EP0839271B1/en not_active Expired - Lifetime
- 1996-05-08 AT AT96914053T patent/ATE174662T1/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2626131A1 (en) * | 1976-06-11 | 1977-12-22 | Mahle Gmbh | HARD ANODIZED LIGHT ALLOY PISTON |
| DE3928480A1 (en) * | 1988-10-03 | 1990-04-12 | Barkas Werke Veb | IC engine with catalyst-coated combustion chamber - using silica, alumina and magnesia based ceramic mixt. as catalyst |
| EP0545230B1 (en) * | 1991-11-27 | 1995-06-28 | Electro Chemical Engineering GmbH | Process for preparing modified oxide ceramic coatings on barrier-layer metals and products obtained |
| DE4242099A1 (en) * | 1992-12-14 | 1994-06-16 | Abb Patent Gmbh | Appts., esp. gas turbine appts. - having coating on its operating parts in contact with fuel gas or waste gas to reduce pollutant emissions |
Non-Patent Citations (2)
| Title |
|---|
| JP 6-221222 A in: Patent Abstracts of Japan, M-1702, November 11, 1994, Vol. 18/No. 592 * |
| JP 62-240458 A in: Patent Abstracts of Japan, M-683, April 9, 1988, Vol. 12/No. 113 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009012945A1 (en) * | 2009-03-12 | 2010-09-16 | Mtu Aero Engines Gmbh | Method for producing an abrasive coating and component for a turbomachine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1996035868A1 (en) | 1996-11-14 |
| DE29680358U1 (en) | 1998-02-12 |
| DE19680303D2 (en) | 1997-08-21 |
| EP0839271A1 (en) | 1998-05-06 |
| ES2127637T3 (en) | 1999-04-16 |
| AU5758896A (en) | 1996-11-29 |
| EP0839271B1 (en) | 1998-12-16 |
| DE59601018D1 (en) | 1999-01-28 |
| ATE174662T1 (en) | 1999-01-15 |
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| 8143 | Lapsed due to claiming internal priority |